<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        var b1=false
        var b2=true
        result= b1&& b2
        console.log('为',result)

        result =2>1? 'yes':'no'
        console.log(result)
    </script>
</head>
<body>

</body>
</html>